Also, i've not read all posts here, but in Rio, when a girl is fucking a "gringo", people will just assume she's a pro. This makes them reluctant to do so. They'll need an even more solid alibi. As i speak portuguese and look like i could be brazilian, i can often get away with it, but it's not an advantage. It's more like a disadvantage to be a "gringo".
“You can’t turn a ‘no’ into a ‘yes’ without a ‘maybe’ first” Frank Underwood.
“Hoe groter de slet, de beter in bed” Me